Home / 142,627.80-196,829.10-85,326.12

Finding the Fourth Proportional to 142,627.80, 196,829.10 and 85,326.12

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Solution

The fourth proportional to 142,627.80, 196,829.10 and 85,326.12 is: 117,751.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,627.80 : 196,829.10 = 85,326.12 : x
  2. Step 2: Convert to fraction form
    142,627.80/196,829.10 = 85,326.12/x
  3. Step 3: Cross multiply
    142,627.80x = 196,829.10 × 85,326.12
  4. Step 4: Simplify right side
    142,627.80x = 16,794,663,406.09
  5. Step 5: Solve for x
    x = 16,794,663,406.09/142,627.80
  6. Step 6: Final answer
    x = 117,751.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.